20154260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{401}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 48625920

約数和(自身を除く): 28471660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 401, 718, 802, 1436, 1604, 1795, 2005, 2513, 2807, 3590, 4010, 5026, 5614, 7180, 8020, 10052, 11228, 12565, 14035, 25130, 28070, 50260, 56140, 143959, 287918, 575836, 719795, 1007713, 1439590, 2015426, 2879180, 4030852, 5038565, 10077130, 20154260]

約数ペア:

[(1, 20154260), (2, 10077130), (4, 5038565), (5, 4030852), (7, 2879180), (10, 2015426), (14, 1439590), (20, 1007713), (28, 719795), (35, 575836), (70, 287918), (140, 143959), (359, 56140), (401, 50260), (718, 28070), (802, 25130), (1436, 14035), (1604, 12565), (1795, 11228), (2005, 10052), (2513, 8020), (2807, 7180), (3590, 5614), (4010, 5026)]